A 28-year-old man was airlifted to the hospital with serious injuries Sunday after he was “eviscerated” by a boat propeller while trying to untangle caught fishing line, a sheriff’s officials said.

About 10:30 a.m. Sunday, deputies with the Los Angeles County Sheriff’s Department Parks Bureau responded to reports of an injured boater near Chumash Island on Pyramid Lake, said Deputy Tim Stanley.

“A 28-year-old man was cut by the propeller of a boat and he suffered a 12-inch laceration across his abdomen,” Stanley said, describing the injury by touching his waist and drawing a line to his belly button.

He also suffered a serious 4-inch cut to his left arm in which the tendons were exposed, he said.